Yes, All the larger letters are done with fusible. I chose to do raw edge applique and on some, I zig zagged with a tight zig zag stitch to get the look I wanted on others. (I don't have an embroidery machine, but, I'm sure you could do much with lettering with that also.) The only big thing I changed from the original pattern was the April block was the letters "Inspire". I hate to paper piece so, I did applique instead. But, there are other blocks in there that do use paper piecing as well.
It is an interesting Block of the Month using all different techniques.